Need advice adding modules in apache server (post here?)

my web page
I have had a very simple server setup for bout 2 years .
would like to save some bandwidth as my server is home based and my isp is
shutting it down when I reach my limit.
have added the following to my conf file
but I am not sure it is right (I get no errors).
ther is no mod_gzip.c file that I can find
or gzip.so file so I loaded the mod_gzip.dll file
I found the source file mod_gzip.c and saved that?
server loads about the same. but now images load slower? Thanks for any help
LoadModule expires_module modules/mod_expires.so
LoadModule headers_module modules/mod_headers.so
#LoadModule usertrack_module modules/mod_usertrack.so
#LoadModule unique_id_module modules/mod_unique_id.so
LoadModule gzip_module modules/ApacheModuleGzip.dll